Finding the Third Proportional to 4,010,465 and 8,660,128

Step by Step Solution

1. Step 1: Write the proportion equation
   4,010,465 : 8,660,128 = 8,660,128 : x
2. Step 2: Convert to fraction form
   4,010,465/8,660,128 = 8,660,128/x
3. Step 3: Cross multiply
   4,010,465x = 8,660,128 × 8,660,128
4. Step 4: Simplify right side
   4,010,465x = 74,997,816,976,384
5. Step 5: Solve for x
   x = 74,997,816,976,384/4,010,465
6. Step 6: Final answer
   x = 18,700,528.99