Finding the Third Proportional to 3,988,266 and 8,698,332

Step by Step Solution

1. Step 1: Write the proportion equation
   3,988,266 : 8,698,332 = 8,698,332 : x
2. Step 2: Convert to fraction form
   3,988,266/8,698,332 = 8,698,332/x
3. Step 3: Cross multiply
   3,988,266x = 8,698,332 × 8,698,332
4. Step 4: Simplify right side
   3,988,266x = 75,660,979,582,224
5. Step 5: Solve for x
   x = 75,660,979,582,224/3,988,266
6. Step 6: Final answer
   x = 18,970,896.02