Finding the Third Proportional to 89,971,819,688 and 187,390,553,928

Step by Step Solution

1. Step 1: Write the proportion equation
   89,971,819,688 : 187,390,553,928 = 187,390,553,928 : x
2. Step 2: Convert to fraction form
   89,971,819,688/187,390,553,928 = 187,390,553,928/x
3. Step 3: Cross multiply
   89,971,819,688x = 187,390,553,928 × 187,390,553,928
4. Step 4: Simplify right side
   89,971,819,688x = 35,115,219,701,442,677,833,728
5. Step 5: Solve for x
   x = 35,115,219,701,442,677,833,728/89,971,819,688
6. Step 6: Final answer
   x = 390,291,313,693.71