Finding the Third Proportional to 13,142,660 and 28,807,409

Step by Step Solution

1. Step 1: Write the proportion equation
   13,142,660 : 28,807,409 = 28,807,409 : x
2. Step 2: Convert to fraction form
   13,142,660/28,807,409 = 28,807,409/x
3. Step 3: Cross multiply
   13,142,660x = 28,807,409 × 28,807,409
4. Step 4: Simplify right side
   13,142,660x = 829,866,813,293,281
5. Step 5: Solve for x
   x = 829,866,813,293,281/13,142,660
6. Step 6: Final answer
   x = 63,142,987.29