Finding the Third Proportional to 571,789 and 838,585.50

Step by Step Solution

1. Step 1: Write the proportion equation
   571,789 : 838,585.50 = 838,585.50 : x
2. Step 2: Convert to fraction form
   571,789/838,585.50 = 838,585.50/x
3. Step 3: Cross multiply
   571,789x = 838,585.50 × 838,585.50
4. Step 4: Simplify right side
   571,789x = 703,225,640,810.25
5. Step 5: Solve for x
   x = 703,225,640,810.25/571,789
6. Step 6: Final answer
   x = 1,229,869.13