Finding the Third Proportional to 405,580.50 and 938,889

Step by Step Solution

1. Step 1: Write the proportion equation
   405,580.50 : 938,889 = 938,889 : x
2. Step 2: Convert to fraction form
   405,580.50/938,889 = 938,889/x
3. Step 3: Cross multiply
   405,580.50x = 938,889 × 938,889
4. Step 4: Simplify right side
   405,580.50x = 881,512,554,321
5. Step 5: Solve for x
   x = 881,512,554,321/405,580.50
6. Step 6: Final answer
   x = 2,173,458.92