Finding the Third Proportional to 751,128 and 1,670,172

Step by Step Solution

1. Step 1: Write the proportion equation
   751,128 : 1,670,172 = 1,670,172 : x
2. Step 2: Convert to fraction form
   751,128/1,670,172 = 1,670,172/x
3. Step 3: Cross multiply
   751,128x = 1,670,172 × 1,670,172
4. Step 4: Simplify right side
   751,128x = 2,789,474,509,584
5. Step 5: Solve for x
   x = 2,789,474,509,584/751,128
6. Step 6: Final answer
   x = 3,713,713.92