Finding the Third Proportional to 425,374.50 and 870,129

Step by Step Solution

1. Step 1: Write the proportion equation
   425,374.50 : 870,129 = 870,129 : x
2. Step 2: Convert to fraction form
   425,374.50/870,129 = 870,129/x
3. Step 3: Cross multiply
   425,374.50x = 870,129 × 870,129
4. Step 4: Simplify right side
   425,374.50x = 757,124,476,641
5. Step 5: Solve for x
   x = 757,124,476,641/425,374.50
6. Step 6: Final answer
   x = 1,779,900.95