Finding the Third Proportional to 607.31 and 915.94

Step by Step Solution

1. Step 1: Write the proportion equation
   607.31 : 915.94 = 915.94 : x
2. Step 2: Convert to fraction form
   607.31/915.94 = 915.94/x
3. Step 3: Cross multiply
   607.31x = 915.94 × 915.94
4. Step 4: Simplify right side
   607.31x = 838,941.50
5. Step 5: Solve for x
   x = 838,941.50/607.31
6. Step 6: Final answer
   x = 1,381.40