Finding the Third Proportional to 69,372.50 and 103,780.50

Step by Step Solution

1. Step 1: Write the proportion equation
   69,372.50 : 103,780.50 = 103,780.50 : x
2. Step 2: Convert to fraction form
   69,372.50/103,780.50 = 103,780.50/x
3. Step 3: Cross multiply
   69,372.50x = 103,780.50 × 103,780.50
4. Step 4: Simplify right side
   69,372.50x = 10,770,392,180.25
5. Step 5: Solve for x
   x = 10,770,392,180.25/69,372.50
6. Step 6: Final answer
   x = 155,254.49