Finding the Third Proportional to 64,818 and 140,701.50

Step by Step Solution

1. Step 1: Write the proportion equation
   64,818 : 140,701.50 = 140,701.50 : x
2. Step 2: Convert to fraction form
   64,818/140,701.50 = 140,701.50/x
3. Step 3: Cross multiply
   64,818x = 140,701.50 × 140,701.50
4. Step 4: Simplify right side
   64,818x = 19,796,912,102.25
5. Step 5: Solve for x
   x = 19,796,912,102.25/64,818
6. Step 6: Final answer
   x = 305,423.06