Finding the Third Proportional to 272,562 and 411,300

Step by Step Solution

1. Step 1: Write the proportion equation
   272,562 : 411,300 = 411,300 : x
2. Step 2: Convert to fraction form
   272,562/411,300 = 411,300/x
3. Step 3: Cross multiply
   272,562x = 411,300 × 411,300
4. Step 4: Simplify right side
   272,562x = 169,167,690,000
5. Step 5: Solve for x
   x = 169,167,690,000/272,562
6. Step 6: Final answer
   x = 620,657.65