Finding the Third Proportional to 122,136 and 250,192.50

Step by Step Solution

1. Step 1: Write the proportion equation
   122,136 : 250,192.50 = 250,192.50 : x
2. Step 2: Convert to fraction form
   122,136/250,192.50 = 250,192.50/x
3. Step 3: Cross multiply
   122,136x = 250,192.50 × 250,192.50
4. Step 4: Simplify right side
   122,136x = 62,596,287,056.25
5. Step 5: Solve for x
   x = 62,596,287,056.25/122,136
6. Step 6: Final answer
   x = 512,512.99