Finding the Third Proportional to 35,312 and 72,620

Step by Step Solution

1. Step 1: Write the proportion equation
   35,312 : 72,620 = 72,620 : x
2. Step 2: Convert to fraction form
   35,312/72,620 = 72,620/x
3. Step 3: Cross multiply
   35,312x = 72,620 × 72,620
4. Step 4: Simplify right side
   35,312x = 5,273,664,400
5. Step 5: Solve for x
   x = 5,273,664,400/35,312
6. Step 6: Final answer
   x = 149,344.82