Finding the Third Proportional to 142,924 and 308,448

Step by Step Solution

1. Step 1: Write the proportion equation
   142,924 : 308,448 = 308,448 : x
2. Step 2: Convert to fraction form
   142,924/308,448 = 308,448/x
3. Step 3: Cross multiply
   142,924x = 308,448 × 308,448
4. Step 4: Simplify right side
   142,924x = 95,140,168,704
5. Step 5: Solve for x
   x = 95,140,168,704/142,924
6. Step 6: Final answer
   x = 665,669.65