Finding the Third Proportional to 19,428,305 and 42,134,658

Step by Step Solution

1. Step 1: Write the proportion equation
   19,428,305 : 42,134,658 = 42,134,658 : x
2. Step 2: Convert to fraction form
   19,428,305/42,134,658 = 42,134,658/x
3. Step 3: Cross multiply
   19,428,305x = 42,134,658 × 42,134,658
4. Step 4: Simplify right side
   19,428,305x = 1,775,329,404,776,964
5. Step 5: Solve for x
   x = 1,775,329,404,776,964/19,428,305
6. Step 6: Final answer
   x = 91,378,501.87