Finding the Third Proportional to 98,387,686 and 215,309,454

Step by Step Solution

1. Step 1: Write the proportion equation
   98,387,686 : 215,309,454 = 215,309,454 : x
2. Step 2: Convert to fraction form
   98,387,686/215,309,454 = 215,309,454/x
3. Step 3: Cross multiply
   98,387,686x = 215,309,454 × 215,309,454
4. Step 4: Simplify right side
   98,387,686x = 46,358,160,981,778,112
5. Step 5: Solve for x
   x = 46,358,160,981,778,112/98,387,686
6. Step 6: Final answer
   x = 471,178,486.52