Finding the Third Proportional to 153,273 and 239,221.50

Step by Step Solution

1. Step 1: Write the proportion equation
   153,273 : 239,221.50 = 239,221.50 : x
2. Step 2: Convert to fraction form
   153,273/239,221.50 = 239,221.50/x
3. Step 3: Cross multiply
   153,273x = 239,221.50 × 239,221.50
4. Step 4: Simplify right side
   153,273x = 57,226,926,062.25
5. Step 5: Solve for x
   x = 57,226,926,062.25/153,273
6. Step 6: Final answer
   x = 373,365.99