Finding the Third Proportional to 499,346 and 706,559.50

Step by Step Solution

1. Step 1: Write the proportion equation
   499,346 : 706,559.50 = 706,559.50 : x
2. Step 2: Convert to fraction form
   499,346/706,559.50 = 706,559.50/x
3. Step 3: Cross multiply
   499,346x = 706,559.50 × 706,559.50
4. Step 4: Simplify right side
   499,346x = 499,226,327,040.25
5. Step 5: Solve for x
   x = 499,226,327,040.25/499,346
6. Step 6: Final answer
   x = 999,760.34