Finding the Third Proportional to 11,859,909 and 25,989,154.50

Step by Step Solution

1. Step 1: Write the proportion equation
   11,859,909 : 25,989,154.50 = 25,989,154.50 : x
2. Step 2: Convert to fraction form
   11,859,909/25,989,154.50 = 25,989,154.50/x
3. Step 3: Cross multiply
   11,859,909x = 25,989,154.50 × 25,989,154.50
4. Step 4: Simplify right side
   11,859,909x = 675,436,151,624,870.25
5. Step 5: Solve for x
   x = 675,436,151,624,870.25/11,859,909
6. Step 6: Final answer
   x = 56,951,208.62