Finding the Third Proportional to 54,508,746.50 and 83,783,698

Step by Step Solution

1. Step 1: Write the proportion equation
   54,508,746.50 : 83,783,698 = 83,783,698 : x
2. Step 2: Convert to fraction form
   54,508,746.50/83,783,698 = 83,783,698/x
3. Step 3: Cross multiply
   54,508,746.50x = 83,783,698 × 83,783,698
4. Step 4: Simplify right side
   54,508,746.50x = 7,019,708,050,555,204
5. Step 5: Solve for x
   x = 7,019,708,050,555,204/54,508,746.50
6. Step 6: Final answer
   x = 128,781,314.95