Finding the Third Proportional to 10,499,580 and 21,837,239

Step by Step Solution

1. Step 1: Write the proportion equation
   10,499,580 : 21,837,239 = 21,837,239 : x
2. Step 2: Convert to fraction form
   10,499,580/21,837,239 = 21,837,239/x
3. Step 3: Cross multiply
   10,499,580x = 21,837,239 × 21,837,239
4. Step 4: Simplify right side
   10,499,580x = 476,865,007,143,121
5. Step 5: Solve for x
   x = 476,865,007,143,121/10,499,580
6. Step 6: Final answer
   x = 45,417,531.67