Finding the Third Proportional to 60,090 and 139,103

Step by Step Solution

1. Step 1: Write the proportion equation
   60,090 : 139,103 = 139,103 : x
2. Step 2: Convert to fraction form
   60,090/139,103 = 139,103/x
3. Step 3: Cross multiply
   60,090x = 139,103 × 139,103
4. Step 4: Simplify right side
   60,090x = 19,349,644,609
5. Step 5: Solve for x
   x = 19,349,644,609/60,090
6. Step 6: Final answer
   x = 322,011.06