Finding the Third Proportional to 138,303 and 301,630.50

Step by Step Solution

1. Step 1: Write the proportion equation
   138,303 : 301,630.50 = 301,630.50 : x
2. Step 2: Convert to fraction form
   138,303/301,630.50 = 301,630.50/x
3. Step 3: Cross multiply
   138,303x = 301,630.50 × 301,630.50
4. Step 4: Simplify right side
   138,303x = 90,980,958,530.25
5. Step 5: Solve for x
   x = 90,980,958,530.25/138,303
6. Step 6: Final answer
   x = 657,837.92