Finding the Third Proportional to 139,713 and 221,326.50

Step by Step Solution

1. Step 1: Write the proportion equation
   139,713 : 221,326.50 = 221,326.50 : x
2. Step 2: Convert to fraction form
   139,713/221,326.50 = 221,326.50/x
3. Step 3: Cross multiply
   139,713x = 221,326.50 × 221,326.50
4. Step 4: Simplify right side
   139,713x = 48,985,419,602.25
5. Step 5: Solve for x
   x = 48,985,419,602.25/139,713
6. Step 6: Final answer
   x = 350,614.61