Finding the Third Proportional to 118,690,446 and 253,058,280

Step by Step Solution

1. Step 1: Write the proportion equation
   118,690,446 : 253,058,280 = 253,058,280 : x
2. Step 2: Convert to fraction form
   118,690,446/253,058,280 = 253,058,280/x
3. Step 3: Cross multiply
   118,690,446x = 253,058,280 × 253,058,280
4. Step 4: Simplify right side
   118,690,446x = 64,038,493,076,558,400
5. Step 5: Solve for x
   x = 64,038,493,076,558,400/118,690,446
6. Step 6: Final answer
   x = 539,542,104.99