Finding the Third Proportional to 275,026.50 and 425,490

Step by Step Solution

1. Step 1: Write the proportion equation
   275,026.50 : 425,490 = 425,490 : x
2. Step 2: Convert to fraction form
   275,026.50/425,490 = 425,490/x
3. Step 3: Cross multiply
   275,026.50x = 425,490 × 425,490
4. Step 4: Simplify right side
   275,026.50x = 181,041,740,100
5. Step 5: Solve for x
   x = 181,041,740,100/275,026.50
6. Step 6: Final answer
   x = 658,270.17