Finding the Third Proportional to 98,689,536 and 213,853,736

Step by Step Solution

1. Step 1: Write the proportion equation
   98,689,536 : 213,853,736 = 213,853,736 : x
2. Step 2: Convert to fraction form
   98,689,536/213,853,736 = 213,853,736/x
3. Step 3: Cross multiply
   98,689,536x = 213,853,736 × 213,853,736
4. Step 4: Simplify right side
   98,689,536x = 45,733,420,401,157,696
5. Step 5: Solve for x
   x = 45,733,420,401,157,696/98,689,536
6. Step 6: Final answer
   x = 463,406,985.73