Finding the Third Proportional to 407,890.50 and 763,110

Step by Step Solution

1. Step 1: Write the proportion equation
   407,890.50 : 763,110 = 763,110 : x
2. Step 2: Convert to fraction form
   407,890.50/763,110 = 763,110/x
3. Step 3: Cross multiply
   407,890.50x = 763,110 × 763,110
4. Step 4: Simplify right side
   407,890.50x = 582,336,872,100
5. Step 5: Solve for x
   x = 582,336,872,100/407,890.50
6. Step 6: Final answer
   x = 1,427,679.42