Finding the Third Proportional to 207,099 and 498,784.50

Step by Step Solution

1. Step 1: Write the proportion equation
   207,099 : 498,784.50 = 498,784.50 : x
2. Step 2: Convert to fraction form
   207,099/498,784.50 = 498,784.50/x
3. Step 3: Cross multiply
   207,099x = 498,784.50 × 498,784.50
4. Step 4: Simplify right side
   207,099x = 248,785,977,440.25
5. Step 5: Solve for x
   x = 248,785,977,440.25/207,099
6. Step 6: Final answer
   x = 1,201,290.10