Finding the Third Proportional to 275,745 and 442,411.50

Step by Step Solution

1. Step 1: Write the proportion equation
   275,745 : 442,411.50 = 442,411.50 : x
2. Step 2: Convert to fraction form
   275,745/442,411.50 = 442,411.50/x
3. Step 3: Cross multiply
   275,745x = 442,411.50 × 442,411.50
4. Step 4: Simplify right side
   275,745x = 195,727,935,332.25
5. Step 5: Solve for x
   x = 195,727,935,332.25/275,745
6. Step 6: Final answer
   x = 709,814.99