Finding the Third Proportional to 275,261 and 402,271.50

Step by Step Solution

1. Step 1: Write the proportion equation
   275,261 : 402,271.50 = 402,271.50 : x
2. Step 2: Convert to fraction form
   275,261/402,271.50 = 402,271.50/x
3. Step 3: Cross multiply
   275,261x = 402,271.50 × 402,271.50
4. Step 4: Simplify right side
   275,261x = 161,822,359,712.25
5. Step 5: Solve for x
   x = 161,822,359,712.25/275,261
6. Step 6: Final answer
   x = 587,886.99