Finding the Third Proportional to 111,943 and 155,153.50

Step by Step Solution

1. Step 1: Write the proportion equation
   111,943 : 155,153.50 = 155,153.50 : x
2. Step 2: Convert to fraction form
   111,943/155,153.50 = 155,153.50/x
3. Step 3: Cross multiply
   111,943x = 155,153.50 × 155,153.50
4. Step 4: Simplify right side
   111,943x = 24,072,608,562.25
5. Step 5: Solve for x
   x = 24,072,608,562.25/111,943
6. Step 6: Final answer
   x = 215,043.45