Finding the Third Proportional to 64,981,900 and 142,716,818

Step by Step Solution

1. Step 1: Write the proportion equation
   64,981,900 : 142,716,818 = 142,716,818 : x
2. Step 2: Convert to fraction form
   64,981,900/142,716,818 = 142,716,818/x
3. Step 3: Cross multiply
   64,981,900x = 142,716,818 × 142,716,818
4. Step 4: Simplify right side
   64,981,900x = 20,368,090,140,045,124
5. Step 5: Solve for x
   x = 20,368,090,140,045,124/64,981,900
6. Step 6: Final answer
   x = 313,442,514.61