Finding the Third Proportional to 42,770,984 and 87,809,380

Step by Step Solution

1. Step 1: Write the proportion equation
   42,770,984 : 87,809,380 = 87,809,380 : x
2. Step 2: Convert to fraction form
   42,770,984/87,809,380 = 87,809,380/x
3. Step 3: Cross multiply
   42,770,984x = 87,809,380 × 87,809,380
4. Step 4: Simplify right side
   42,770,984x = 7,710,487,215,984,400
5. Step 5: Solve for x
   x = 7,710,487,215,984,400/42,770,984
6. Step 6: Final answer
   x = 180,273,785.99