Finding the Third Proportional to 458,117 and 699,021.50

Step by Step Solution

1. Step 1: Write the proportion equation
   458,117 : 699,021.50 = 699,021.50 : x
2. Step 2: Convert to fraction form
   458,117/699,021.50 = 699,021.50/x
3. Step 3: Cross multiply
   458,117x = 699,021.50 × 699,021.50
4. Step 4: Simplify right side
   458,117x = 488,631,057,462.25
5. Step 5: Solve for x
   x = 488,631,057,462.25/458,117
6. Step 6: Final answer
   x = 1,066,607.56