Finding the Third Proportional to 31,900,560 and 69,977,154

Step by Step Solution

1. Step 1: Write the proportion equation
   31,900,560 : 69,977,154 = 69,977,154 : x
2. Step 2: Convert to fraction form
   31,900,560/69,977,154 = 69,977,154/x
3. Step 3: Cross multiply
   31,900,560x = 69,977,154 × 69,977,154
4. Step 4: Simplify right side
   31,900,560x = 4,896,802,081,939,716
5. Step 5: Solve for x
   x = 4,896,802,081,939,716/31,900,560
6. Step 6: Final answer
   x = 153,502,072.75