Finding the Third Proportional to 140,385 and 304,420.50

Step by Step Solution

1. Step 1: Write the proportion equation
   140,385 : 304,420.50 = 304,420.50 : x
2. Step 2: Convert to fraction form
   140,385/304,420.50 = 304,420.50/x
3. Step 3: Cross multiply
   140,385x = 304,420.50 × 304,420.50
4. Step 4: Simplify right side
   140,385x = 92,671,840,820.25
5. Step 5: Solve for x
   x = 92,671,840,820.25/140,385
6. Step 6: Final answer
   x = 660,126.37