Finding the Third Proportional to 3,549,840 and 5,318,640

Step by Step Solution

1. Step 1: Write the proportion equation
   3,549,840 : 5,318,640 = 5,318,640 : x
2. Step 2: Convert to fraction form
   3,549,840/5,318,640 = 5,318,640/x
3. Step 3: Cross multiply
   3,549,840x = 5,318,640 × 5,318,640
4. Step 4: Simplify right side
   3,549,840x = 28,287,931,449,600
5. Step 5: Solve for x
   x = 28,287,931,449,600/3,549,840
6. Step 6: Final answer
   x = 7,968,790.55