Finding the Third Proportional to 410,769 and 631,111.50

Step by Step Solution

1. Step 1: Write the proportion equation
   410,769 : 631,111.50 = 631,111.50 : x
2. Step 2: Convert to fraction form
   410,769/631,111.50 = 631,111.50/x
3. Step 3: Cross multiply
   410,769x = 631,111.50 × 631,111.50
4. Step 4: Simplify right side
   410,769x = 398,301,725,432.25
5. Step 5: Solve for x
   x = 398,301,725,432.25/410,769
6. Step 6: Final answer
   x = 969,648.94