Finding the Third Proportional to 899,360 and 1,989,168

Step by Step Solution

1. Step 1: Write the proportion equation
   899,360 : 1,989,168 = 1,989,168 : x
2. Step 2: Convert to fraction form
   899,360/1,989,168 = 1,989,168/x
3. Step 3: Cross multiply
   899,360x = 1,989,168 × 1,989,168
4. Step 4: Simplify right side
   899,360x = 3,956,789,332,224
5. Step 5: Solve for x
   x = 3,956,789,332,224/899,360
6. Step 6: Final answer
   x = 4,399,561.17