Finding the Third Proportional to 590,136 and 865,837.50

Step by Step Solution

1. Step 1: Write the proportion equation
   590,136 : 865,837.50 = 865,837.50 : x
2. Step 2: Convert to fraction form
   590,136/865,837.50 = 865,837.50/x
3. Step 3: Cross multiply
   590,136x = 865,837.50 × 865,837.50
4. Step 4: Simplify right side
   590,136x = 749,674,576,406.25
5. Step 5: Solve for x
   x = 749,674,576,406.25/590,136
6. Step 6: Final answer
   x = 1,270,342.05