Finding the Third Proportional to 3,426,638 and 5,140,611

Step by Step Solution

1. Step 1: Write the proportion equation
   3,426,638 : 5,140,611 = 5,140,611 : x
2. Step 2: Convert to fraction form
   3,426,638/5,140,611 = 5,140,611/x
3. Step 3: Cross multiply
   3,426,638x = 5,140,611 × 5,140,611
4. Step 4: Simplify right side
   3,426,638x = 26,425,881,453,321
5. Step 5: Solve for x
   x = 26,425,881,453,321/3,426,638
6. Step 6: Final answer
   x = 7,711,897.62