Finding the Third Proportional to 72,312 and 148,147

Step by Step Solution

1. Step 1: Write the proportion equation
   72,312 : 148,147 = 148,147 : x
2. Step 2: Convert to fraction form
   72,312/148,147 = 148,147/x
3. Step 3: Cross multiply
   72,312x = 148,147 × 148,147
4. Step 4: Simplify right side
   72,312x = 21,947,533,609
5. Step 5: Solve for x
   x = 21,947,533,609/72,312
6. Step 6: Final answer
   x = 303,511.64