Finding the Third Proportional to 986,418 and 2,151,562.50

Step by Step Solution

1. Step 1: Write the proportion equation
   986,418 : 2,151,562.50 = 2,151,562.50 : x
2. Step 2: Convert to fraction form
   986,418/2,151,562.50 = 2,151,562.50/x
3. Step 3: Cross multiply
   986,418x = 2,151,562.50 × 2,151,562.50
4. Step 4: Simplify right side
   986,418x = 4,629,221,191,406.25
5. Step 5: Solve for x
   x = 4,629,221,191,406.25/986,418
6. Step 6: Final answer
   x = 4,692,960.99