Finding the Third Proportional to 69,009.50 and 147,855.50

Step by Step Solution

1. Step 1: Write the proportion equation
   69,009.50 : 147,855.50 = 147,855.50 : x
2. Step 2: Convert to fraction form
   69,009.50/147,855.50 = 147,855.50/x
3. Step 3: Cross multiply
   69,009.50x = 147,855.50 × 147,855.50
4. Step 4: Simplify right side
   69,009.50x = 21,861,248,880.25
5. Step 5: Solve for x
   x = 21,861,248,880.25/69,009.50
6. Step 6: Final answer
   x = 316,786.08