Finding the Third Proportional to 68,985 and 148,540.50

Step by Step Solution

1. Step 1: Write the proportion equation
   68,985 : 148,540.50 = 148,540.50 : x
2. Step 2: Convert to fraction form
   68,985/148,540.50 = 148,540.50/x
3. Step 3: Cross multiply
   68,985x = 148,540.50 × 148,540.50
4. Step 4: Simplify right side
   68,985x = 22,064,280,140.25
5. Step 5: Solve for x
   x = 22,064,280,140.25/68,985
6. Step 6: Final answer
   x = 319,841.71