Finding the Third Proportional to 713,421 and 978,277.50

Step by Step Solution

1. Step 1: Write the proportion equation
   713,421 : 978,277.50 = 978,277.50 : x
2. Step 2: Convert to fraction form
   713,421/978,277.50 = 978,277.50/x
3. Step 3: Cross multiply
   713,421x = 978,277.50 × 978,277.50
4. Step 4: Simplify right side
   713,421x = 957,026,867,006.25
5. Step 5: Solve for x
   x = 957,026,867,006.25/713,421
6. Step 6: Final answer
   x = 1,341,461.59