Finding the Third Proportional to 142,837.50 and 272,715

Step by Step Solution

1. Step 1: Write the proportion equation
   142,837.50 : 272,715 = 272,715 : x
2. Step 2: Convert to fraction form
   142,837.50/272,715 = 272,715/x
3. Step 3: Cross multiply
   142,837.50x = 272,715 × 272,715
4. Step 4: Simplify right side
   142,837.50x = 74,373,471,225
5. Step 5: Solve for x
   x = 74,373,471,225/142,837.50
6. Step 6: Final answer
   x = 520,685.89