Finding the Third Proportional to 137,069 and 215,069

Step by Step Solution

1. Step 1: Write the proportion equation
   137,069 : 215,069 = 215,069 : x
2. Step 2: Convert to fraction form
   137,069/215,069 = 215,069/x
3. Step 3: Cross multiply
   137,069x = 215,069 × 215,069
4. Step 4: Simplify right side
   137,069x = 46,254,674,761
5. Step 5: Solve for x
   x = 46,254,674,761/137,069
6. Step 6: Final answer
   x = 337,455.40