Finding the Third Proportional to 45,679,178 and 74,987,406

Step by Step Solution

1. Step 1: Write the proportion equation
   45,679,178 : 74,987,406 = 74,987,406 : x
2. Step 2: Convert to fraction form
   45,679,178/74,987,406 = 74,987,406/x
3. Step 3: Cross multiply
   45,679,178x = 74,987,406 × 74,987,406
4. Step 4: Simplify right side
   45,679,178x = 5,623,111,058,608,836
5. Step 5: Solve for x
   x = 5,623,111,058,608,836/45,679,178
6. Step 6: Final answer
   x = 123,100,092.97