Finding the Third Proportional to 3,421,685 and 7,348,810

Step by Step Solution

1. Step 1: Write the proportion equation
   3,421,685 : 7,348,810 = 7,348,810 : x
2. Step 2: Convert to fraction form
   3,421,685/7,348,810 = 7,348,810/x
3. Step 3: Cross multiply
   3,421,685x = 7,348,810 × 7,348,810
4. Step 4: Simplify right side
   3,421,685x = 54,005,008,416,100
5. Step 5: Solve for x
   x = 54,005,008,416,100/3,421,685
6. Step 6: Final answer
   x = 15,783,161.93