Finding the Third Proportional to 70,710 and 148,690.50

Step by Step Solution

1. Step 1: Write the proportion equation
   70,710 : 148,690.50 = 148,690.50 : x
2. Step 2: Convert to fraction form
   70,710/148,690.50 = 148,690.50/x
3. Step 3: Cross multiply
   70,710x = 148,690.50 × 148,690.50
4. Step 4: Simplify right side
   70,710x = 22,108,864,790.25
5. Step 5: Solve for x
   x = 22,108,864,790.25/70,710
6. Step 6: Final answer
   x = 312,669.56