Finding the Third Proportional to 64,099.50 and 136,945.50

Step by Step Solution

1. Step 1: Write the proportion equation
   64,099.50 : 136,945.50 = 136,945.50 : x
2. Step 2: Convert to fraction form
   64,099.50/136,945.50 = 136,945.50/x
3. Step 3: Cross multiply
   64,099.50x = 136,945.50 × 136,945.50
4. Step 4: Simplify right side
   64,099.50x = 18,754,069,970.25
5. Step 5: Solve for x
   x = 18,754,069,970.25/64,099.50
6. Step 6: Final answer
   x = 292,577.48