Finding the Third Proportional to 4,826,526 and 9,987,120

Step by Step Solution

1. Step 1: Write the proportion equation
   4,826,526 : 9,987,120 = 9,987,120 : x
2. Step 2: Convert to fraction form
   4,826,526/9,987,120 = 9,987,120/x
3. Step 3: Cross multiply
   4,826,526x = 9,987,120 × 9,987,120
4. Step 4: Simplify right side
   4,826,526x = 99,742,565,894,400
5. Step 5: Solve for x
   x = 99,742,565,894,400/4,826,526
6. Step 6: Final answer
   x = 20,665,498.52