Finding the Third Proportional to 140,134 and 307,521

Step by Step Solution

1. Step 1: Write the proportion equation
   140,134 : 307,521 = 307,521 : x
2. Step 2: Convert to fraction form
   140,134/307,521 = 307,521/x
3. Step 3: Cross multiply
   140,134x = 307,521 × 307,521
4. Step 4: Simplify right side
   140,134x = 94,569,165,441
5. Step 5: Solve for x
   x = 94,569,165,441/140,134
6. Step 6: Final answer
   x = 674,848.11