Finding the Third Proportional to 155,139 and 240,196.50

Step by Step Solution

1. Step 1: Write the proportion equation
   155,139 : 240,196.50 = 240,196.50 : x
2. Step 2: Convert to fraction form
   155,139/240,196.50 = 240,196.50/x
3. Step 3: Cross multiply
   155,139x = 240,196.50 × 240,196.50
4. Step 4: Simplify right side
   155,139x = 57,694,358,612.25
5. Step 5: Solve for x
   x = 57,694,358,612.25/155,139
6. Step 6: Final answer
   x = 371,888.17