Finding the Third Proportional to 915,772 and 1,989,184

Step by Step Solution

1. Step 1: Write the proportion equation
   915,772 : 1,989,184 = 1,989,184 : x
2. Step 2: Convert to fraction form
   915,772/1,989,184 = 1,989,184/x
3. Step 3: Cross multiply
   915,772x = 1,989,184 × 1,989,184
4. Step 4: Simplify right side
   915,772x = 3,956,852,985,856
5. Step 5: Solve for x
   x = 3,956,852,985,856/915,772
6. Step 6: Final answer
   x = 4,320,783.98