Finding the Third Proportional to 72,478.55 and 146,996.02

Step by Step Solution

1. Step 1: Write the proportion equation
   72,478.55 : 146,996.02 = 146,996.02 : x
2. Step 2: Convert to fraction form
   72,478.55/146,996.02 = 146,996.02/x
3. Step 3: Cross multiply
   72,478.55x = 146,996.02 × 146,996.02
4. Step 4: Simplify right side
   72,478.55x = 21,607,828,609.63
5. Step 5: Solve for x
   x = 21,607,828,609.63/72,478.55
6. Step 6: Final answer
   x = 298,127.23