Finding the Third Proportional to 11,817,563 and 25,705,669

Step by Step Solution

1. Step 1: Write the proportion equation
   11,817,563 : 25,705,669 = 25,705,669 : x
2. Step 2: Convert to fraction form
   11,817,563/25,705,669 = 25,705,669/x
3. Step 3: Cross multiply
   11,817,563x = 25,705,669 × 25,705,669
4. Step 4: Simplify right side
   11,817,563x = 660,781,418,737,561
5. Step 5: Solve for x
   x = 660,781,418,737,561/11,817,563
6. Step 6: Final answer
   x = 55,915,201.70