Finding the Third Proportional to 272,312 and 380,892

Step by Step Solution

1. Step 1: Write the proportion equation
   272,312 : 380,892 = 380,892 : x
2. Step 2: Convert to fraction form
   272,312/380,892 = 380,892/x
3. Step 3: Cross multiply
   272,312x = 380,892 × 380,892
4. Step 4: Simplify right side
   272,312x = 145,078,715,664
5. Step 5: Solve for x
   x = 145,078,715,664/272,312
6. Step 6: Final answer
   x = 532,766.52