Finding the Third Proportional to 553,648.50 and 867,363

Step by Step Solution

1. Step 1: Write the proportion equation
   553,648.50 : 867,363 = 867,363 : x
2. Step 2: Convert to fraction form
   553,648.50/867,363 = 867,363/x
3. Step 3: Cross multiply
   553,648.50x = 867,363 × 867,363
4. Step 4: Simplify right side
   553,648.50x = 752,318,573,769
5. Step 5: Solve for x
   x = 752,318,573,769/553,648.50
6. Step 6: Final answer
   x = 1,358,837.92