Finding the Third Proportional to 216,785,124 and 309,035,196

Step by Step Solution

1. Step 1: Write the proportion equation
   216,785,124 : 309,035,196 = 309,035,196 : x
2. Step 2: Convert to fraction form
   216,785,124/309,035,196 = 309,035,196/x
3. Step 3: Cross multiply
   216,785,124x = 309,035,196 × 309,035,196
4. Step 4: Simplify right side
   216,785,124x = 95,502,752,366,758,416
5. Step 5: Solve for x
   x = 95,502,752,366,758,416/216,785,124
6. Step 6: Final answer
   x = 440,541,078.67