Finding the Third Proportional to 19,709,538 and 42,142,916

Step by Step Solution

1. Step 1: Write the proportion equation
   19,709,538 : 42,142,916 = 42,142,916 : x
2. Step 2: Convert to fraction form
   19,709,538/42,142,916 = 42,142,916/x
3. Step 3: Cross multiply
   19,709,538x = 42,142,916 × 42,142,916
4. Step 4: Simplify right side
   19,709,538x = 1,776,025,368,983,056
5. Step 5: Solve for x
   x = 1,776,025,368,983,056/19,709,538
6. Step 6: Final answer
   x = 90,109,944.18