Finding the Third Proportional to 142,078 and 328,060

Step by Step Solution

1. Step 1: Write the proportion equation
   142,078 : 328,060 = 328,060 : x
2. Step 2: Convert to fraction form
   142,078/328,060 = 328,060/x
3. Step 3: Cross multiply
   142,078x = 328,060 × 328,060
4. Step 4: Simplify right side
   142,078x = 107,623,363,600
5. Step 5: Solve for x
   x = 107,623,363,600/142,078
6. Step 6: Final answer
   x = 757,494.92