Finding the Third Proportional to 531,147 and 822,424.50

Step by Step Solution

1. Step 1: Write the proportion equation
   531,147 : 822,424.50 = 822,424.50 : x
2. Step 2: Convert to fraction form
   531,147/822,424.50 = 822,424.50/x
3. Step 3: Cross multiply
   531,147x = 822,424.50 × 822,424.50
4. Step 4: Simplify right side
   531,147x = 676,382,058,200.25
5. Step 5: Solve for x
   x = 676,382,058,200.25/531,147
6. Step 6: Final answer
   x = 1,273,436.65