Finding the Third Proportional to 9,079,906,818 and 12,780,937,834.50

Step by Step Solution

1. Step 1: Write the proportion equation
   9,079,906,818 : 12,780,937,834.50 = 12,780,937,834.50 : x
2. Step 2: Convert to fraction form
   9,079,906,818/12,780,937,834.50 = 12,780,937,834.50/x
3. Step 3: Cross multiply
   9,079,906,818x = 12,780,937,834.50 × 12,780,937,834.50
4. Step 4: Simplify right side
   9,079,906,818x = 163,352,371,929,353,551,872
5. Step 5: Solve for x
   x = 163,352,371,929,353,551,872/9,079,906,818
6. Step 6: Final answer
   x = 17,990,533,956.31