Finding the Third Proportional to 4,121,932 and 8,791,664

Step by Step Solution

1. Step 1: Write the proportion equation
   4,121,932 : 8,791,664 = 8,791,664 : x
2. Step 2: Convert to fraction form
   4,121,932/8,791,664 = 8,791,664/x
3. Step 3: Cross multiply
   4,121,932x = 8,791,664 × 8,791,664
4. Step 4: Simplify right side
   4,121,932x = 77,293,355,888,896
5. Step 5: Solve for x
   x = 77,293,355,888,896/4,121,932
6. Step 6: Final answer
   x = 18,751,729.99