Finding the Third Proportional to 69,619.50 and 147,987

Step by Step Solution

1. Step 1: Write the proportion equation
   69,619.50 : 147,987 = 147,987 : x
2. Step 2: Convert to fraction form
   69,619.50/147,987 = 147,987/x
3. Step 3: Cross multiply
   69,619.50x = 147,987 × 147,987
4. Step 4: Simplify right side
   69,619.50x = 21,900,152,169
5. Step 5: Solve for x
   x = 21,900,152,169/69,619.50
6. Step 6: Final answer
   x = 314,569.23