Finding the Third Proportional to 272,199 and 400,522.50

Step by Step Solution

1. Step 1: Write the proportion equation
   272,199 : 400,522.50 = 400,522.50 : x
2. Step 2: Convert to fraction form
   272,199/400,522.50 = 400,522.50/x
3. Step 3: Cross multiply
   272,199x = 400,522.50 × 400,522.50
4. Step 4: Simplify right side
   272,199x = 160,418,273,006.25
5. Step 5: Solve for x
   x = 160,418,273,006.25/272,199
6. Step 6: Final answer
   x = 589,341.89