Finding the Third Proportional to 357,312.50 and 784,616

Step by Step Solution

1. Step 1: Write the proportion equation
   357,312.50 : 784,616 = 784,616 : x
2. Step 2: Convert to fraction form
   357,312.50/784,616 = 784,616/x
3. Step 3: Cross multiply
   357,312.50x = 784,616 × 784,616
4. Step 4: Simplify right side
   357,312.50x = 615,622,267,456
5. Step 5: Solve for x
   x = 615,622,267,456/357,312.50
6. Step 6: Final answer
   x = 1,722,923.96