Finding the Third Proportional to 142,532 and 309,871.50

Step by Step Solution

1. Step 1: Write the proportion equation
   142,532 : 309,871.50 = 309,871.50 : x
2. Step 2: Convert to fraction form
   142,532/309,871.50 = 309,871.50/x
3. Step 3: Cross multiply
   142,532x = 309,871.50 × 309,871.50
4. Step 4: Simplify right side
   142,532x = 96,020,346,512.25
5. Step 5: Solve for x
   x = 96,020,346,512.25/142,532
6. Step 6: Final answer
   x = 673,675.71