Finding the Third Proportional to 42,213,560 and 66,897,564

Step by Step Solution

1. Step 1: Write the proportion equation
   42,213,560 : 66,897,564 = 66,897,564 : x
2. Step 2: Convert to fraction form
   42,213,560/66,897,564 = 66,897,564/x
3. Step 3: Cross multiply
   42,213,560x = 66,897,564 × 66,897,564
4. Step 4: Simplify right side
   42,213,560x = 4,475,284,069,134,096
5. Step 5: Solve for x
   x = 4,475,284,069,134,096/42,213,560
6. Step 6: Final answer
   x = 106,015,319.94