Finding the Third Proportional to 1,178,517,087 and 1,638,633,793.50

Step by Step Solution

1. Step 1: Write the proportion equation
   1,178,517,087 : 1,638,633,793.50 = 1,638,633,793.50 : x
2. Step 2: Convert to fraction form
   1,178,517,087/1,638,633,793.50 = 1,638,633,793.50/x
3. Step 3: Cross multiply
   1,178,517,087x = 1,638,633,793.50 × 1,638,633,793.50
4. Step 4: Simplify right side
   1,178,517,087x = 2,685,120,709,200,200,704
5. Step 5: Solve for x
   x = 2,685,120,709,200,200,704/1,178,517,087
6. Step 6: Final answer
   x = 2,278,389,290.08