Finding the Third Proportional to 98,849,390 and 205,879,936

Step by Step Solution

1. Step 1: Write the proportion equation
   98,849,390 : 205,879,936 = 205,879,936 : x
2. Step 2: Convert to fraction form
   98,849,390/205,879,936 = 205,879,936/x
3. Step 3: Cross multiply
   98,849,390x = 205,879,936 × 205,879,936
4. Step 4: Simplify right side
   98,849,390x = 42,386,548,047,364,096
5. Step 5: Solve for x
   x = 42,386,548,047,364,096/98,849,390
6. Step 6: Final answer
   x = 428,799,287.96