Finding the Third Proportional to 499,578 and 761,881.50

Step by Step Solution

1. Step 1: Write the proportion equation
   499,578 : 761,881.50 = 761,881.50 : x
2. Step 2: Convert to fraction form
   499,578/761,881.50 = 761,881.50/x
3. Step 3: Cross multiply
   499,578x = 761,881.50 × 761,881.50
4. Step 4: Simplify right side
   499,578x = 580,463,420,042.25
5. Step 5: Solve for x
   x = 580,463,420,042.25/499,578
6. Step 6: Final answer
   x = 1,161,907.49