Finding the Third Proportional to 69,418.50 and 103,830.50

Step by Step Solution

1. Step 1: Write the proportion equation
   69,418.50 : 103,830.50 = 103,830.50 : x
2. Step 2: Convert to fraction form
   69,418.50/103,830.50 = 103,830.50/x
3. Step 3: Cross multiply
   69,418.50x = 103,830.50 × 103,830.50
4. Step 4: Simplify right side
   69,418.50x = 10,780,772,730.25
5. Step 5: Solve for x
   x = 10,780,772,730.25/69,418.50
6. Step 6: Final answer
   x = 155,301.15