Finding the Third Proportional to 618,946.50 and 1,312,411.50

Step by Step Solution

1. Step 1: Write the proportion equation
   618,946.50 : 1,312,411.50 = 1,312,411.50 : x
2. Step 2: Convert to fraction form
   618,946.50/1,312,411.50 = 1,312,411.50/x
3. Step 3: Cross multiply
   618,946.50x = 1,312,411.50 × 1,312,411.50
4. Step 4: Simplify right side
   618,946.50x = 1,722,423,945,332.25
5. Step 5: Solve for x
   x = 1,722,423,945,332.25/618,946.50
6. Step 6: Final answer
   x = 2,782,831.71