Finding the Third Proportional to 108,725 and 153,109

Step by Step Solution

1. Step 1: Write the proportion equation
   108,725 : 153,109 = 153,109 : x
2. Step 2: Convert to fraction form
   108,725/153,109 = 153,109/x
3. Step 3: Cross multiply
   108,725x = 153,109 × 153,109
4. Step 4: Simplify right side
   108,725x = 23,442,365,881
5. Step 5: Solve for x
   x = 23,442,365,881/108,725
6. Step 6: Final answer
   x = 215,611.55