Finding the Third Proportional to 64,828.50 and 100,009.50

Step by Step Solution

1. Step 1: Write the proportion equation
   64,828.50 : 100,009.50 = 100,009.50 : x
2. Step 2: Convert to fraction form
   64,828.50/100,009.50 = 100,009.50/x
3. Step 3: Cross multiply
   64,828.50x = 100,009.50 × 100,009.50
4. Step 4: Simplify right side
   64,828.50x = 10,001,900,090.25
5. Step 5: Solve for x
   x = 10,001,900,090.25/64,828.50
6. Step 6: Final answer
   x = 154,282.45