Finding the Third Proportional to 423,380 and 915,016

Step by Step Solution

1. Step 1: Write the proportion equation
   423,380 : 915,016 = 915,016 : x
2. Step 2: Convert to fraction form
   423,380/915,016 = 915,016/x
3. Step 3: Cross multiply
   423,380x = 915,016 × 915,016
4. Step 4: Simplify right side
   423,380x = 837,254,280,256
5. Step 5: Solve for x
   x = 837,254,280,256/423,380
6. Step 6: Final answer
   x = 1,977,548.02