Finding the Third Proportional to 42,449,243,616 and 90,861,596,640

Step by Step Solution

1. Step 1: Write the proportion equation
   42,449,243,616 : 90,861,596,640 = 90,861,596,640 : x
2. Step 2: Convert to fraction form
   42,449,243,616/90,861,596,640 = 90,861,596,640/x
3. Step 3: Cross multiply
   42,449,243,616x = 90,861,596,640 × 90,861,596,640
4. Step 4: Simplify right side
   42,449,243,616x = 8,255,829,743,970,059,026,432
5. Step 5: Solve for x
   x = 8,255,829,743,970,059,026,432/42,449,243,616
6. Step 6: Final answer
   x = 194,487,087,182.36