Finding the Third Proportional to 590,199 and 865,726.50

Step by Step Solution

1. Step 1: Write the proportion equation
   590,199 : 865,726.50 = 865,726.50 : x
2. Step 2: Convert to fraction form
   590,199/865,726.50 = 865,726.50/x
3. Step 3: Cross multiply
   590,199x = 865,726.50 × 865,726.50
4. Step 4: Simplify right side
   590,199x = 749,482,372,802.25
5. Step 5: Solve for x
   x = 749,482,372,802.25/590,199
6. Step 6: Final answer
   x = 1,269,880.79