Finding the Third Proportional to 5,340,394 and 8,274,465

Step by Step Solution

1. Step 1: Write the proportion equation
   5,340,394 : 8,274,465 = 8,274,465 : x
2. Step 2: Convert to fraction form
   5,340,394/8,274,465 = 8,274,465/x
3. Step 3: Cross multiply
   5,340,394x = 8,274,465 × 8,274,465
4. Step 4: Simplify right side
   5,340,394x = 68,466,771,036,225
5. Step 5: Solve for x
   x = 68,466,771,036,225/5,340,394
6. Step 6: Final answer
   x = 12,820,546.77