Finding the Third Proportional to 64,981,898 and 142,716,814

Step by Step Solution

1. Step 1: Write the proportion equation
   64,981,898 : 142,716,814 = 142,716,814 : x
2. Step 2: Convert to fraction form
   64,981,898/142,716,814 = 142,716,814/x
3. Step 3: Cross multiply
   64,981,898x = 142,716,814 × 142,716,814
4. Step 4: Simplify right side
   64,981,898x = 20,368,088,998,310,596
5. Step 5: Solve for x
   x = 20,368,088,998,310,596/64,981,898
6. Step 6: Final answer
   x = 313,442,506.69