Finding the Third Proportional to 19,804,983.50 and 42,538,431

Step by Step Solution

1. Step 1: Write the proportion equation
   19,804,983.50 : 42,538,431 = 42,538,431 : x
2. Step 2: Convert to fraction form
   19,804,983.50/42,538,431 = 42,538,431/x
3. Step 3: Cross multiply
   19,804,983.50x = 42,538,431 × 42,538,431
4. Step 4: Simplify right side
   19,804,983.50x = 1,809,518,111,941,761
5. Step 5: Solve for x
   x = 1,809,518,111,941,761/19,804,983.50
6. Step 6: Final answer
   x = 91,366,807.35