Finding the Third Proportional to 69,288.75 and 149,634

Step by Step Solution

1. Step 1: Write the proportion equation
   69,288.75 : 149,634 = 149,634 : x
2. Step 2: Convert to fraction form
   69,288.75/149,634 = 149,634/x
3. Step 3: Cross multiply
   69,288.75x = 149,634 × 149,634
4. Step 4: Simplify right side
   69,288.75x = 22,390,333,956
5. Step 5: Solve for x
   x = 22,390,333,956/69,288.75
6. Step 6: Final answer
   x = 323,145.30