Finding the Third Proportional to 98,688,879 and 213,852,429

Step by Step Solution

1. Step 1: Write the proportion equation
   98,688,879 : 213,852,429 = 213,852,429 : x
2. Step 2: Convert to fraction form
   98,688,879/213,852,429 = 213,852,429/x
3. Step 3: Cross multiply
   98,688,879x = 213,852,429 × 213,852,429
4. Step 4: Simplify right side
   98,688,879x = 45,732,861,389,200,040
5. Step 5: Solve for x
   x = 45,732,861,389,200,040/98,688,879
6. Step 6: Final answer
   x = 463,404,406.38