Finding the Third Proportional to 6,466,488 and 8,991,132

Step by Step Solution

1. Step 1: Write the proportion equation
   6,466,488 : 8,991,132 = 8,991,132 : x
2. Step 2: Convert to fraction form
   6,466,488/8,991,132 = 8,991,132/x
3. Step 3: Cross multiply
   6,466,488x = 8,991,132 × 8,991,132
4. Step 4: Simplify right side
   6,466,488x = 80,840,454,641,424
5. Step 5: Solve for x
   x = 80,840,454,641,424/6,466,488
6. Step 6: Final answer
   x = 12,501,446.63