Finding the Third Proportional to 59,222,980 and 142,670,554

Step by Step Solution

1. Step 1: Write the proportion equation
   59,222,980 : 142,670,554 = 142,670,554 : x
2. Step 2: Convert to fraction form
   59,222,980/142,670,554 = 142,670,554/x
3. Step 3: Cross multiply
   59,222,980x = 142,670,554 × 142,670,554
4. Step 4: Simplify right side
   59,222,980x = 20,354,886,978,666,916
5. Step 5: Solve for x
   x = 20,354,886,978,666,916/59,222,980
6. Step 6: Final answer
   x = 343,699,134.67