Finding the Third Proportional to 51,043,887 and 78,458,112

Step by Step Solution

1. Step 1: Write the proportion equation
   51,043,887 : 78,458,112 = 78,458,112 : x
2. Step 2: Convert to fraction form
   51,043,887/78,458,112 = 78,458,112/x
3. Step 3: Cross multiply
   51,043,887x = 78,458,112 × 78,458,112
4. Step 4: Simplify right side
   51,043,887x = 6,155,675,338,604,544
5. Step 5: Solve for x
   x = 6,155,675,338,604,544/51,043,887
6. Step 6: Final answer
   x = 120,595,740.26