Finding the Third Proportional to 11,817,511.50 and 25,705,566

Step by Step Solution

1. Step 1: Write the proportion equation
   11,817,511.50 : 25,705,566 = 25,705,566 : x
2. Step 2: Convert to fraction form
   11,817,511.50/25,705,566 = 25,705,566/x
3. Step 3: Cross multiply
   11,817,511.50x = 25,705,566 × 25,705,566
4. Step 4: Simplify right side
   11,817,511.50x = 660,776,123,380,356
5. Step 5: Solve for x
   x = 660,776,123,380,356/11,817,511.50
6. Step 6: Final answer
   x = 55,914,997.28