Finding the Third Proportional to 917,120 and 1,223,157

Step by Step Solution

1. Step 1: Write the proportion equation
   917,120 : 1,223,157 = 1,223,157 : x
2. Step 2: Convert to fraction form
   917,120/1,223,157 = 1,223,157/x
3. Step 3: Cross multiply
   917,120x = 1,223,157 × 1,223,157
4. Step 4: Simplify right side
   917,120x = 1,496,113,046,649
5. Step 5: Solve for x
   x = 1,496,113,046,649/917,120
6. Step 6: Final answer
   x = 1,631,316.56