Finding the Third Proportional to 27,687,078 and 42,981,736

Step by Step Solution

1. Step 1: Write the proportion equation
   27,687,078 : 42,981,736 = 42,981,736 : x
2. Step 2: Convert to fraction form
   27,687,078/42,981,736 = 42,981,736/x
3. Step 3: Cross multiply
   27,687,078x = 42,981,736 × 42,981,736
4. Step 4: Simplify right side
   27,687,078x = 1,847,429,629,573,696
5. Step 5: Solve for x
   x = 1,847,429,629,573,696/27,687,078
6. Step 6: Final answer
   x = 66,725,337.70