Finding the Third Proportional to 1,658,880 and 3,639,168

Step by Step Solution

1. Step 1: Write the proportion equation
   1,658,880 : 3,639,168 = 3,639,168 : x
2. Step 2: Convert to fraction form
   1,658,880/3,639,168 = 3,639,168/x
3. Step 3: Cross multiply
   1,658,880x = 3,639,168 × 3,639,168
4. Step 4: Simplify right side
   1,658,880x = 13,243,543,732,224
5. Step 5: Solve for x
   x = 13,243,543,732,224/1,658,880
6. Step 6: Final answer
   x = 7,983,424.80