Finding the Third Proportional to 100,139 and 155,933.50

Step by Step Solution

1. Step 1: Write the proportion equation
   100,139 : 155,933.50 = 155,933.50 : x
2. Step 2: Convert to fraction form
   100,139/155,933.50 = 155,933.50/x
3. Step 3: Cross multiply
   100,139x = 155,933.50 × 155,933.50
4. Step 4: Simplify right side
   100,139x = 24,315,256,422.25
5. Step 5: Solve for x
   x = 24,315,256,422.25/100,139
6. Step 6: Final answer
   x = 242,815.05