Finding the Third Proportional to 12,940,632 and 20,298,276

Step by Step Solution

1. Step 1: Write the proportion equation
   12,940,632 : 20,298,276 = 20,298,276 : x
2. Step 2: Convert to fraction form
   12,940,632/20,298,276 = 20,298,276/x
3. Step 3: Cross multiply
   12,940,632x = 20,298,276 × 20,298,276
4. Step 4: Simplify right side
   12,940,632x = 412,020,008,572,176
5. Step 5: Solve for x
   x = 412,020,008,572,176/12,940,632
6. Step 6: Final answer
   x = 31,839,249.32