Finding the Third Proportional to 8,898,657,459 and 12,118,452,565

Step by Step Solution

1. Step 1: Write the proportion equation
   8,898,657,459 : 12,118,452,565 = 12,118,452,565 : x
2. Step 2: Convert to fraction form
   8,898,657,459/12,118,452,565 = 12,118,452,565/x
3. Step 3: Cross multiply
   8,898,657,459x = 12,118,452,565 × 12,118,452,565
4. Step 4: Simplify right side
   8,898,657,459x = 146,856,892,570,155,073,536
5. Step 5: Solve for x
   x = 146,856,892,570,155,073,536/8,898,657,459
6. Step 6: Final answer
   x = 16,503,263,918.94