Finding the Third Proportional to 138,773 and 298,958.25

Step by Step Solution

1. Step 1: Write the proportion equation
   138,773 : 298,958.25 = 298,958.25 : x
2. Step 2: Convert to fraction form
   138,773/298,958.25 = 298,958.25/x
3. Step 3: Cross multiply
   138,773x = 298,958.25 × 298,958.25
4. Step 4: Simplify right side
   138,773x = 89,376,035,243.06
5. Step 5: Solve for x
   x = 89,376,035,243.06/138,773
6. Step 6: Final answer
   x = 644,044.84