Finding the Third Proportional to 69,721.50 and 152,749.50

Step by Step Solution

1. Step 1: Write the proportion equation
   69,721.50 : 152,749.50 = 152,749.50 : x
2. Step 2: Convert to fraction form
   69,721.50/152,749.50 = 152,749.50/x
3. Step 3: Cross multiply
   69,721.50x = 152,749.50 × 152,749.50
4. Step 4: Simplify right side
   69,721.50x = 23,332,409,750.25
5. Step 5: Solve for x
   x = 23,332,409,750.25/69,721.50
6. Step 6: Final answer
   x = 334,651.57