Finding the Third Proportional to 69,376.50 and 141,345

Step by Step Solution

1. Step 1: Write the proportion equation
   69,376.50 : 141,345 = 141,345 : x
2. Step 2: Convert to fraction form
   69,376.50/141,345 = 141,345/x
3. Step 3: Cross multiply
   69,376.50x = 141,345 × 141,345
4. Step 4: Simplify right side
   69,376.50x = 19,978,409,025
5. Step 5: Solve for x
   x = 19,978,409,025/69,376.50
6. Step 6: Final answer
   x = 287,970.84