Finding the Third Proportional to 98,689,574 and 213,853,810

Step by Step Solution

1. Step 1: Write the proportion equation
   98,689,574 : 213,853,810 = 213,853,810 : x
2. Step 2: Convert to fraction form
   98,689,574/213,853,810 = 213,853,810/x
3. Step 3: Cross multiply
   98,689,574x = 213,853,810 × 213,853,810
4. Step 4: Simplify right side
   98,689,574x = 45,733,452,051,516,096
5. Step 5: Solve for x
   x = 45,733,452,051,516,096/98,689,574
6. Step 6: Final answer
   x = 463,407,128.01