Finding the Third Proportional to 8,898,657,426 and 12,118,452,516

Step by Step Solution

1. Step 1: Write the proportion equation
   8,898,657,426 : 12,118,452,516 = 12,118,452,516 : x
2. Step 2: Convert to fraction form
   8,898,657,426/12,118,452,516 = 12,118,452,516/x
3. Step 3: Cross multiply
   8,898,657,426x = 12,118,452,516 × 12,118,452,516
4. Step 4: Simplify right side
   8,898,657,426x = 146,856,891,382,546,726,912
5. Step 5: Solve for x
   x = 146,856,891,382,546,726,912/8,898,657,426
6. Step 6: Final answer
   x = 16,503,263,846.69