Finding the Third Proportional to 165,938 and 390,052

Step by Step Solution

1. Step 1: Write the proportion equation
   165,938 : 390,052 = 390,052 : x
2. Step 2: Convert to fraction form
   165,938/390,052 = 390,052/x
3. Step 3: Cross multiply
   165,938x = 390,052 × 390,052
4. Step 4: Simplify right side
   165,938x = 152,140,562,704
5. Step 5: Solve for x
   x = 152,140,562,704/165,938
6. Step 6: Final answer
   x = 916,851.85