Finding the Third Proportional to 590,661 and 885,799.50

Step by Step Solution

1. Step 1: Write the proportion equation
   590,661 : 885,799.50 = 885,799.50 : x
2. Step 2: Convert to fraction form
   590,661/885,799.50 = 885,799.50/x
3. Step 3: Cross multiply
   590,661x = 885,799.50 × 885,799.50
4. Step 4: Simplify right side
   590,661x = 784,640,754,200.25
5. Step 5: Solve for x
   x = 784,640,754,200.25/590,661
6. Step 6: Final answer
   x = 1,328,411.31