Finding the Third Proportional to 552,672 and 853,420.50

Step by Step Solution

1. Step 1: Write the proportion equation
   552,672 : 853,420.50 = 853,420.50 : x
2. Step 2: Convert to fraction form
   552,672/853,420.50 = 853,420.50/x
3. Step 3: Cross multiply
   552,672x = 853,420.50 × 853,420.50
4. Step 4: Simplify right side
   552,672x = 728,326,549,820.25
5. Step 5: Solve for x
   x = 728,326,549,820.25/552,672
6. Step 6: Final answer
   x = 1,317,827.84