Finding the Third Proportional to 31,525 and 64,490

Step by Step Solution

1. Step 1: Write the proportion equation
   31,525 : 64,490 = 64,490 : x
2. Step 2: Convert to fraction form
   31,525/64,490 = 64,490/x
3. Step 3: Cross multiply
   31,525x = 64,490 × 64,490
4. Step 4: Simplify right side
   31,525x = 4,158,960,100
5. Step 5: Solve for x
   x = 4,158,960,100/31,525
6. Step 6: Final answer
   x = 131,925.78