Finding the Third Proportional to 19,474,386.19 and 42,180,429.38

Step by Step Solution

1. Step 1: Write the proportion equation
   19,474,386.19 : 42,180,429.38 = 42,180,429.38 : x
2. Step 2: Convert to fraction form
   19,474,386.19/42,180,429.38 = 42,180,429.38/x
3. Step 3: Cross multiply
   19,474,386.19x = 42,180,429.38 × 42,180,429.38
4. Step 4: Simplify right side
   19,474,386.19x = 1,779,188,622,259,363
5. Step 5: Solve for x
   x = 1,779,188,622,259,363/19,474,386.19
6. Step 6: Final answer
   x = 91,360,446.75