Finding the Third Proportional to 103,864.78 and 148,516.03

Step by Step Solution

1. Step 1: Write the proportion equation
   103,864.78 : 148,516.03 = 148,516.03 : x
2. Step 2: Convert to fraction form
   103,864.78/148,516.03 = 148,516.03/x
3. Step 3: Cross multiply
   103,864.78x = 148,516.03 × 148,516.03
4. Step 4: Simplify right side
   103,864.78x = 22,057,011,538.25
5. Step 5: Solve for x
   x = 22,057,011,538.25/103,864.78
6. Step 6: Final answer
   x = 212,362.76