Finding the Third Proportional to 915,782 and 1,989,208

Step by Step Solution

1. Step 1: Write the proportion equation
   915,782 : 1,989,208 = 1,989,208 : x
2. Step 2: Convert to fraction form
   915,782/1,989,208 = 1,989,208/x
3. Step 3: Cross multiply
   915,782x = 1,989,208 × 1,989,208
4. Step 4: Simplify right side
   915,782x = 3,956,948,467,264
5. Step 5: Solve for x
   x = 3,956,948,467,264/915,782
6. Step 6: Final answer
   x = 4,320,841.06