Finding the Third Proportional to 19,900.69 and 42,702.19

Step by Step Solution

1. Step 1: Write the proportion equation
   19,900.69 : 42,702.19 = 42,702.19 : x
2. Step 2: Convert to fraction form
   19,900.69/42,702.19 = 42,702.19/x
3. Step 3: Cross multiply
   19,900.69x = 42,702.19 × 42,702.19
4. Step 4: Simplify right side
   19,900.69x = 1,823,476,817.29
5. Step 5: Solve for x
   x = 1,823,476,817.29/19,900.69
6. Step 6: Final answer
   x = 91,628.84