Finding the Third Proportional to 899,360 and 1,989,152

Step by Step Solution

1. Step 1: Write the proportion equation
   899,360 : 1,989,152 = 1,989,152 : x
2. Step 2: Convert to fraction form
   899,360/1,989,152 = 1,989,152/x
3. Step 3: Cross multiply
   899,360x = 1,989,152 × 1,989,152
4. Step 4: Simplify right side
   899,360x = 3,956,725,679,104
5. Step 5: Solve for x
   x = 3,956,725,679,104/899,360
6. Step 6: Final answer
   x = 4,399,490.39