Finding the Third Proportional to 5,340,312 and 8,263,888

Step by Step Solution

1. Step 1: Write the proportion equation
   5,340,312 : 8,263,888 = 8,263,888 : x
2. Step 2: Convert to fraction form
   5,340,312/8,263,888 = 8,263,888/x
3. Step 3: Cross multiply
   5,340,312x = 8,263,888 × 8,263,888
4. Step 4: Simplify right side
   5,340,312x = 68,291,844,876,544
5. Step 5: Solve for x
   x = 68,291,844,876,544/5,340,312
6. Step 6: Final answer
   x = 12,787,987.83