Finding the Third Proportional to 5,239,278 and 7,826,565

Step by Step Solution

1. Step 1: Write the proportion equation
   5,239,278 : 7,826,565 = 7,826,565 : x
2. Step 2: Convert to fraction form
   5,239,278/7,826,565 = 7,826,565/x
3. Step 3: Cross multiply
   5,239,278x = 7,826,565 × 7,826,565
4. Step 4: Simplify right side
   5,239,278x = 61,255,119,699,225
5. Step 5: Solve for x
   x = 61,255,119,699,225/5,239,278
6. Step 6: Final answer
   x = 11,691,519.27