Finding the Third Proportional to 10,378,085,679 and 15,499,121,748.75

Step by Step Solution

1. Step 1: Write the proportion equation
   10,378,085,679 : 15,499,121,748.75 = 15,499,121,748.75 : x
2. Step 2: Convert to fraction form
   10,378,085,679/15,499,121,748.75 = 15,499,121,748.75/x
3. Step 3: Cross multiply
   10,378,085,679x = 15,499,121,748.75 × 15,499,121,748.75
4. Step 4: Simplify right side
   10,378,085,679x = 240,222,774,982,575,259,648
5. Step 5: Solve for x
   x = 240,222,774,982,575,259,648/10,378,085,679
6. Step 6: Final answer
   x = 23,147,118,111.45