Finding the Third Proportional to 616,372 and 978,006

Step by Step Solution

1. Step 1: Write the proportion equation
   616,372 : 978,006 = 978,006 : x
2. Step 2: Convert to fraction form
   616,372/978,006 = 978,006/x
3. Step 3: Cross multiply
   616,372x = 978,006 × 978,006
4. Step 4: Simplify right side
   616,372x = 956,495,736,036
5. Step 5: Solve for x
   x = 956,495,736,036/616,372
6. Step 6: Final answer
   x = 1,551,815.68