Finding the Third Proportional to 137,725.50 and 291,990

Step by Step Solution

1. Step 1: Write the proportion equation
   137,725.50 : 291,990 = 291,990 : x
2. Step 2: Convert to fraction form
   137,725.50/291,990 = 291,990/x
3. Step 3: Cross multiply
   137,725.50x = 291,990 × 291,990
4. Step 4: Simplify right side
   137,725.50x = 85,258,160,100
5. Step 5: Solve for x
   x = 85,258,160,100/137,725.50
6. Step 6: Final answer
   x = 619,044.11