Finding the Third Proportional to 42,389,579 and 91,274,438

Step by Step Solution

1. Step 1: Write the proportion equation
   42,389,579 : 91,274,438 = 91,274,438 : x
2. Step 2: Convert to fraction form
   42,389,579/91,274,438 = 91,274,438/x
3. Step 3: Cross multiply
   42,389,579x = 91,274,438 × 91,274,438
4. Step 4: Simplify right side
   42,389,579x = 8,331,023,032,215,844
5. Step 5: Solve for x
   x = 8,331,023,032,215,844/42,389,579
6. Step 6: Final answer
   x = 196,534,696.23