Finding the Third Proportional to 31,460 and 69,136.75

Step by Step Solution

1. Step 1: Write the proportion equation
   31,460 : 69,136.75 = 69,136.75 : x
2. Step 2: Convert to fraction form
   31,460/69,136.75 = 69,136.75/x
3. Step 3: Cross multiply
   31,460x = 69,136.75 × 69,136.75
4. Step 4: Simplify right side
   31,460x = 4,779,890,200.56
5. Step 5: Solve for x
   x = 4,779,890,200.56/31,460
6. Step 6: Final answer
   x = 151,935.48