Finding the Third Proportional to 499,705.50 and 712,180.50

Step by Step Solution

1. Step 1: Write the proportion equation
   499,705.50 : 712,180.50 = 712,180.50 : x
2. Step 2: Convert to fraction form
   499,705.50/712,180.50 = 712,180.50/x
3. Step 3: Cross multiply
   499,705.50x = 712,180.50 × 712,180.50
4. Step 4: Simplify right side
   499,705.50x = 507,201,064,580.25
5. Step 5: Solve for x
   x = 507,201,064,580.25/499,705.50
6. Step 6: Final answer
   x = 1,014,999.96