Finding the Third Proportional to 155,136 and 243,769.50

Step by Step Solution

1. Step 1: Write the proportion equation
   155,136 : 243,769.50 = 243,769.50 : x
2. Step 2: Convert to fraction form
   155,136/243,769.50 = 243,769.50/x
3. Step 3: Cross multiply
   155,136x = 243,769.50 × 243,769.50
4. Step 4: Simplify right side
   155,136x = 59,423,569,130.25
5. Step 5: Solve for x
   x = 59,423,569,130.25/155,136
6. Step 6: Final answer
   x = 383,041.78