Finding the Third Proportional to 148,127 and 318,732.50

Step by Step Solution

1. Step 1: Write the proportion equation
   148,127 : 318,732.50 = 318,732.50 : x
2. Step 2: Convert to fraction form
   148,127/318,732.50 = 318,732.50/x
3. Step 3: Cross multiply
   148,127x = 318,732.50 × 318,732.50
4. Step 4: Simplify right side
   148,127x = 101,590,406,556.25
5. Step 5: Solve for x
   x = 101,590,406,556.25/148,127
6. Step 6: Final answer
   x = 685,833.15