Finding the Third Proportional to 3,690,390 and 5,194,611

Step by Step Solution

1. Step 1: Write the proportion equation
   3,690,390 : 5,194,611 = 5,194,611 : x
2. Step 2: Convert to fraction form
   3,690,390/5,194,611 = 5,194,611/x
3. Step 3: Cross multiply
   3,690,390x = 5,194,611 × 5,194,611
4. Step 4: Simplify right side
   3,690,390x = 26,983,983,441,321
5. Step 5: Solve for x
   x = 26,983,983,441,321/3,690,390
6. Step 6: Final answer
   x = 7,311,959.83