Finding the Third Proportional to 201,072,555,172 and 299,865,155,046

Step by Step Solution

1. Step 1: Write the proportion equation
   201,072,555,172 : 299,865,155,046 = 299,865,155,046 : x
2. Step 2: Convert to fraction form
   201,072,555,172/299,865,155,046 = 299,865,155,046/x
3. Step 3: Cross multiply
   201,072,555,172x = 299,865,155,046 × 299,865,155,046
4. Step 4: Simplify right side
   201,072,555,172x = 89,919,111,210,761,617,145,856
5. Step 5: Solve for x
   x = 89,919,111,210,761,617,145,856/201,072,555,172
6. Step 6: Final answer
   x = 447,197,336,970.45