Finding the Third Proportional to 3,639,816 and 5,709,280

Step by Step Solution

1. Step 1: Write the proportion equation
   3,639,816 : 5,709,280 = 5,709,280 : x
2. Step 2: Convert to fraction form
   3,639,816/5,709,280 = 5,709,280/x
3. Step 3: Cross multiply
   3,639,816x = 5,709,280 × 5,709,280
4. Step 4: Simplify right side
   3,639,816x = 32,595,878,118,400
5. Step 5: Solve for x
   x = 32,595,878,118,400/3,639,816
6. Step 6: Final answer
   x = 8,955,364.26