Finding the Third Proportional to 11,817,561 and 25,705,665

Step by Step Solution

1. Step 1: Write the proportion equation
   11,817,561 : 25,705,665 = 25,705,665 : x
2. Step 2: Convert to fraction form
   11,817,561/25,705,665 = 25,705,665/x
3. Step 3: Cross multiply
   11,817,561x = 25,705,665 × 25,705,665
4. Step 4: Simplify right side
   11,817,561x = 660,781,213,092,225
5. Step 5: Solve for x
   x = 660,781,213,092,225/11,817,561
6. Step 6: Final answer
   x = 55,915,193.76