Finding the Third Proportional to 64,881 and 139,461.50

Step by Step Solution

1. Step 1: Write the proportion equation
   64,881 : 139,461.50 = 139,461.50 : x
2. Step 2: Convert to fraction form
   64,881/139,461.50 = 139,461.50/x
3. Step 3: Cross multiply
   64,881x = 139,461.50 × 139,461.50
4. Step 4: Simplify right side
   64,881x = 19,449,509,982.25
5. Step 5: Solve for x
   x = 19,449,509,982.25/64,881
6. Step 6: Final answer
   x = 299,772.04