Finding the Third Proportional to 5,290,862 and 7,915,716

Step by Step Solution

1. Step 1: Write the proportion equation
   5,290,862 : 7,915,716 = 7,915,716 : x
2. Step 2: Convert to fraction form
   5,290,862/7,915,716 = 7,915,716/x
3. Step 3: Cross multiply
   5,290,862x = 7,915,716 × 7,915,716
4. Step 4: Simplify right side
   5,290,862x = 62,658,559,792,656
5. Step 5: Solve for x
   x = 62,658,559,792,656/5,290,862
6. Step 6: Final answer
   x = 11,842,788.53