Finding the Third Proportional to 155,253 and 243,028.50

Step by Step Solution

1. Step 1: Write the proportion equation
   155,253 : 243,028.50 = 243,028.50 : x
2. Step 2: Convert to fraction form
   155,253/243,028.50 = 243,028.50/x
3. Step 3: Cross multiply
   155,253x = 243,028.50 × 243,028.50
4. Step 4: Simplify right side
   155,253x = 59,062,851,812.25
5. Step 5: Solve for x
   x = 59,062,851,812.25/155,253
6. Step 6: Final answer
   x = 380,429.70