Finding the Third Proportional to 515,308 and 712,042

Step by Step Solution

1. Step 1: Write the proportion equation
   515,308 : 712,042 = 712,042 : x
2. Step 2: Convert to fraction form
   515,308/712,042 = 712,042/x
3. Step 3: Cross multiply
   515,308x = 712,042 × 712,042
4. Step 4: Simplify right side
   515,308x = 507,003,809,764
5. Step 5: Solve for x
   x = 507,003,809,764/515,308
6. Step 6: Final answer
   x = 983,885.00