Finding the Third Proportional to 10,438,132,320,489 and 21,173,895,050,883

Step by Step Solution

1. Step 1: Write the proportion equation
   10,438,132,320,489 : 21,173,895,050,883 = 21,173,895,050,883 : x
2. Step 2: Convert to fraction form
   10,438,132,320,489/21,173,895,050,883 = 21,173,895,050,883/x
3. Step 3: Cross multiply
   10,438,132,320,489x = 21,173,895,050,883 × 21,173,895,050,883
4. Step 4: Simplify right side
   10,438,132,320,489x = 448,333,831,625,807,621,416,550,400
5. Step 5: Solve for x
   x = 448,333,831,625,807,621,416,550,400/10,438,132,320,489
6. Step 6: Final answer
   x = 42,951,537,483,939.88