Finding the Third Proportional to 51,705,540 and 78,632,856

Step by Step Solution

1. Step 1: Write the proportion equation
   51,705,540 : 78,632,856 = 78,632,856 : x
2. Step 2: Convert to fraction form
   51,705,540/78,632,856 = 78,632,856/x
3. Step 3: Cross multiply
   51,705,540x = 78,632,856 × 78,632,856
4. Step 4: Simplify right side
   51,705,540x = 6,183,126,042,716,736
5. Step 5: Solve for x
   x = 6,183,126,042,716,736/51,705,540
6. Step 6: Final answer
   x = 119,583,434.25