Finding the Third Proportional to 100,479,010 and 216,354,238

Step by Step Solution

1. Step 1: Write the proportion equation
   100,479,010 : 216,354,238 = 216,354,238 : x
2. Step 2: Convert to fraction form
   100,479,010/216,354,238 = 216,354,238/x
3. Step 3: Cross multiply
   100,479,010x = 216,354,238 × 216,354,238
4. Step 4: Simplify right side
   100,479,010x = 46,809,156,300,560,640
5. Step 5: Solve for x
   x = 46,809,156,300,560,640/100,479,010
6. Step 6: Final answer
   x = 465,860,046.80