Finding the Third Proportional to 156,788 and 236,640

Step by Step Solution

1. Step 1: Write the proportion equation
   156,788 : 236,640 = 236,640 : x
2. Step 2: Convert to fraction form
   156,788/236,640 = 236,640/x
3. Step 3: Cross multiply
   156,788x = 236,640 × 236,640
4. Step 4: Simplify right side
   156,788x = 55,998,489,600
5. Step 5: Solve for x
   x = 55,998,489,600/156,788
6. Step 6: Final answer
   x = 357,160.56