Finding the Third Proportional to 140,931,384 and 215,609,238

Step by Step Solution

1. Step 1: Write the proportion equation
   140,931,384 : 215,609,238 = 215,609,238 : x
2. Step 2: Convert to fraction form
   140,931,384/215,609,238 = 215,609,238/x
3. Step 3: Cross multiply
   140,931,384x = 215,609,238 × 215,609,238
4. Step 4: Simplify right side
   140,931,384x = 46,487,343,510,940,640
5. Step 5: Solve for x
   x = 46,487,343,510,940,640/140,931,384
6. Step 6: Final answer
   x = 329,857,993.24