Finding the Third Proportional to 202,386.50 and 292,388

Step by Step Solution

1. Step 1: Write the proportion equation
   202,386.50 : 292,388 = 292,388 : x
2. Step 2: Convert to fraction form
   202,386.50/292,388 = 292,388/x
3. Step 3: Cross multiply
   202,386.50x = 292,388 × 292,388
4. Step 4: Simplify right side
   202,386.50x = 85,490,742,544
5. Step 5: Solve for x
   x = 85,490,742,544/202,386.50
6. Step 6: Final answer
   x = 422,413.27