Finding the Third Proportional to 499,584 and 761,890.50

Step by Step Solution

1. Step 1: Write the proportion equation
   499,584 : 761,890.50 = 761,890.50 : x
2. Step 2: Convert to fraction form
   499,584/761,890.50 = 761,890.50/x
3. Step 3: Cross multiply
   499,584x = 761,890.50 × 761,890.50
4. Step 4: Simplify right side
   499,584x = 580,477,133,990.25
5. Step 5: Solve for x
   x = 580,477,133,990.25/499,584
6. Step 6: Final answer
   x = 1,161,920.99