Finding the Third Proportional to 70,475 and 147,870

Step by Step Solution

1. Step 1: Write the proportion equation
   70,475 : 147,870 = 147,870 : x
2. Step 2: Convert to fraction form
   70,475/147,870 = 147,870/x
3. Step 3: Cross multiply
   70,475x = 147,870 × 147,870
4. Step 4: Simplify right side
   70,475x = 21,865,536,900
5. Step 5: Solve for x
   x = 21,865,536,900/70,475
6. Step 6: Final answer
   x = 310,259.48