Finding the Third Proportional to 272,040 and 408,061

Step by Step Solution

1. Step 1: Write the proportion equation
   272,040 : 408,061 = 408,061 : x
2. Step 2: Convert to fraction form
   272,040/408,061 = 408,061/x
3. Step 3: Cross multiply
   272,040x = 408,061 × 408,061
4. Step 4: Simplify right side
   272,040x = 166,513,779,721
5. Step 5: Solve for x
   x = 166,513,779,721/272,040
6. Step 6: Final answer
   x = 612,093.00