Finding the Third Proportional to 152,752 and 331,640

Step by Step Solution

1. Step 1: Write the proportion equation
   152,752 : 331,640 = 331,640 : x
2. Step 2: Convert to fraction form
   152,752/331,640 = 331,640/x
3. Step 3: Cross multiply
   152,752x = 331,640 × 331,640
4. Step 4: Simplify right side
   152,752x = 109,985,089,600
5. Step 5: Solve for x
   x = 109,985,089,600/152,752
6. Step 6: Final answer
   x = 720,023.89