Finding the Third Proportional to 142,029 and 309,482

Step by Step Solution

1. Step 1: Write the proportion equation
   142,029 : 309,482 = 309,482 : x
2. Step 2: Convert to fraction form
   142,029/309,482 = 309,482/x
3. Step 3: Cross multiply
   142,029x = 309,482 × 309,482
4. Step 4: Simplify right side
   142,029x = 95,779,108,324
5. Step 5: Solve for x
   x = 95,779,108,324/142,029
6. Step 6: Final answer
   x = 674,363.04