Finding the Third Proportional to 294,780 and 631,612.50

Step by Step Solution

1. Step 1: Write the proportion equation
   294,780 : 631,612.50 = 631,612.50 : x
2. Step 2: Convert to fraction form
   294,780/631,612.50 = 631,612.50/x
3. Step 3: Cross multiply
   294,780x = 631,612.50 × 631,612.50
4. Step 4: Simplify right side
   294,780x = 398,934,350,156.25
5. Step 5: Solve for x
   x = 398,934,350,156.25/294,780
6. Step 6: Final answer
   x = 1,353,329.09